NETSCOUT SYSTEMS INC

For the period ended Sep 30, 2026. Filed Nov 5, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 5, 2026

NTCT$31.51-1.0%Stored close · as of Nov 6, 2026

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Item 5. Other Information

Insider Adoption or Termination of Trading Arrangements:

During the fiscal quarter ended September 30, 2026, none of our directors or officers adopted orterminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as those terms are defined in Regulation S-K, Item 408, except as described in the table below:

Name & Title	Date Adopted	Character of Trading Arrangement(1)	Aggregate Number of Shares of Common Stock to be Purchased or Sold Pursuant to Trading Arrangement	Duration(2)	Date Terminated
Sanjay Munshi, Former Chief Operating Officer	August 20, 2026	Rule 10b5-1 Trading Arrangement	Up to 7,863 shares to be sold	September 15, 2027	N/A
John Downing, Executive Vice President, Worldwide Sales Operations	September 10, 2026(3)	Rule 10b5-1 Trading Arrangement	Up to 40,000 shares to be sold	February 25, 2028	N/A

(1)

Each trading arrangement marked as a “Rule 10b5-1 Trading Arrangement” is intended to satisfy the affirmative defense of Rule 10b5-1(c), as amended (the “Rule”).

(2)

Represents the expiration date of the Rule 10b5-1 Trading Arrangement. Pursuant to the terms of the Rule 10b5-1 Trading Arrangement, the Rule 10b5-1 Trading Arrangement may terminate earlier upon the occurrence of certain events.

(3)

There are no overlapping transactions between Mr. Downing’s 10b5-1 trading arrangement adopted on September 10, 2026 and his arrangement adopted on November 11, 2025.

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